McqMate
| Q. |
In a food chain, the solar energy utilized by plants is only |
| A. | 10 per cent |
| B. | 1 per cent |
| C. | 0.1 per cent |
| D. | 0.01 per cent |
| Answer» C. 0.1 per cent | |
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Explanation: Plants, on average, capture only about 0.1 percent of the solar energy reaching Earth. However, it does not mean that the other 99.9 percent is a "vast untapped reservoir" awaiting man's exploitation. All biological systems, including crops, follow the second law of thermodynamics when solar energy to high-energy form) is converted into chemical energy. Plants utilize this chemical energy in the process of building their own tissue. Some of the energy being changed from light to chemical energy is lost as heat that dissipates into the surrounding environment. |
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